Arch Linux vs Ubuntu Command Reference

Arch Linux (pacman)

sudo pacman -Syu
Update system and upgrade all packages.
sudo pacman -S package
Install a package.
sudo pacman -R package
Remove a package.
pacman -Ss keyword
Search packages.
pacman -Qi package
Package info.

System

ls -la
List files.
cd /path
Change directory.
sudo reboot
Reboot system.
top
Show processes.

Ubuntu (apt)

sudo apt update && sudo apt upgrade
Update package list and upgrade system.
sudo apt install package
Install a package.
sudo apt remove package
Remove a package.
apt search keyword
Search packages.
apt show package
Package information.

System

ls -la
List files.
cd /path
Change directory.
sudo reboot
Reboot system.
top
Show processes.